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09/23/08 3:47 PM ET

Joyner tenders resignation

Hitting coach will leave at end of season after tough year

SAN DIEGO -- Wally Joyner, the Padres' hitting coach, tendered his resignation Monday.

Joyner, who took over last season after the Padres let hitting coach Merv Rettenmund go, submitted his letter of resignation effective at the end of the regular season, according to his agent, Barry Axelrod.

The Padres made a formal announcement in a news release on Tuesday.

"I want to thank Wally for his contributions as our hitting coach since taking over the position last July," executive vice president and general manager Kevin Towers said. "I wish Wally and his entire family great success in their future endeavors."

It was unclear if Joyner would be with the Padres when they open a three-game series in Los Angeles on Tuesday against the Dodgers.

"It's been on his mind for a while," Axelrod said of Joyner's decision.

The Padres close the regular season on Sunday against the Pirates at PETCO Park.

"It is really upsetting," Padres rookie left fielder Chase Headley said Monday. "I really enjoyed working with Wally. I hate to see him go."

The Padres, who won 89 games last season, have also struggled with runners in scoring position, which is just part of the reason they are 61-95 entering Tuesday's game.

Joyner stepped in for Rettenmund on July 31 of last season. The Padres are tied for last in the National League in runs scored (618) and on-base percentage (.317).

The San Diego Union-Tribune first reported Joyner's resignation.

"It bothers me a lot that I have come to the point where it is clear that I need to move on," Joyner told the Union-Tribune. "I came to the job hoping to put my experience and ideas to good use in teaching and coaching the Padres' hitters, but it has become obvious to me in the past few months that the organization's approach is different from mine."

San Diego manager Bud Black wouldn't comment on Joyner's resignation, only to say he "knew he had been thinking about it."

Joyner, 49, was the Padres' third hitting coach since June 2006, after Dave Magadan and Rettenmund both moved on.

Corey Brock is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.